Glutathione Benefits for Your Health and Body GSH synthesis HK Vitals Glutathione Tablets with Vitamin C for Skin Brightening If you drink even moderately or have ever been told your liver enzymes look fine, GGT is the number worth understanding. Gamma glutamyl transferase is an enzyme involved in glutathione metabolism Glutathione vs. NAC: Which Antioxidant Is Best for Your Liver? Life Extension Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification